Power-driven rasp.



G. HAGEN.

POWER DRIVEN RASP.

APPLICATION FILED JULY z, 1913.

Patented Nov. 3, 1914.

JEL-ks.

THE` MORRIS PETERS Co., PHON; www.. wnsnumioN. D. C4

GEORGE HAGEN, oi)Zini/nanowar,MINNESOTA.yy

rowEELDEivEN Rasi.

Specification of Lettersflatent.

' Patented Nov. 3,1914.

Appucationnieaiuiya,1913.seriainawzoia. n

To all whom t mag/*concern j Be it known vthat I, GEORGE HAGEN, a

citizen of the United States, residing at,k Zumbrota, in the county ofGoodhue, State of Minnesota, have invented certain newand usefulImprovements` in Power-Driven Rasps; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.`

This invention relates to new and useful improvements in power drivenrasps and has particular reference to the provision of a rasp for use infarriery. j a

The object of the invention resides in the provision of a rap whichshall be e cient in use and kwhich shall be so constructed asto permitof ready and economical manufacture.

With this and other objects in View, the invention resides in the novelcombination, formation and arrangement of parts to be more fullyhereinafter described and illustrated in the accompanying drawings andparticularly pointed out in the claim hereto appended.

Reference is had to the accompanying drawings wherein similar charactersyof reference designate corresponding p arts throughout the severalviews, and in which:

Figure 1 is a side elevational view of a preferred form of the rasp,Fig. 2 is a. vertical longitudinal sectional yiew of the device, Fig. 3is a sectional view on the line 3 3 of Fig. 1, Figl is a transversesectional view on the line 4 4 of Fig. 1, Fig. 5 is an end view of therasp and Fig. 6 is a perspective view of the body block.

Referring more particularly tothe drawings, the rasp is shown ascomprising a body block 5 which is substantially rectangular in endelevation andwhich has two opposed side faces outwardly bowed. vIt isovalin cross section and mayhave imparted to it a rocking motion aboutitslongitudinal axis 18 to produce a greater or less cutting action asthe work may demand. The block is provided in its other side faces withelongated recesses 6 which aresubstantially semicircular in crosssection and `which termi-l nate short of the ends of the block, toreceive the cylindrical rasp members and 8. These rasp members comprisecylindrical of the class described,

body portions which areprovided .at their ends with beveled edges forreceiving the cone-shaped securing members 9 and 10 which are positionedon a shaft 11 journaled as at 12 inthe ends of the block. 'Theconesliaped member `9 is keyed to the shaft and is provided onitsperiphery with a socket 13 for receiving a projection 141 carried bythe beveled edge of a rasp member. rIhe conesliaped member 10 hasthreaded engagement on the other end of the shaft.

observed that by the position of shaped members, the raspcylinders maybe It will be n the conesecurely clamped withrelation to the shafts 11.As is shown in the drawings, isformed with `coarse teeth on its and therasp 8` with liner teeth for the rasp 7 periphery finishing.`

Suitable bearing members k15 areprovided on the ends ofthe blockandsecured thereto as at 16 to hold the ends of the shaft in relation tothe block. i l

Toprovide'means for imparting rotary motion to the shafts 11, the saidshafts are extended past-the inner end of the black and provided withgear wheels 17 keyed thereon to mesh with a gea`rf18 carried by aenlarged head cutaway as at 20 to receive the handle portion to theblock a plurality of pins 21 are provided which seat in sockets providedtherefor in the head of the handle n portion and securing screws 22arepassed through the head of the handle portion'and the adjacent end ofthe block.` rlhe shaft 18 extends through a bore 23 formed in the handleportion and is operatively con nected at the outer end of the handlepor-` tion to a conventional type of flexible power shaft 24.

so 'shaft rotatable in the handle portion y19 of i i the device. Thisyhandle portion includes an To provide means for hanging the device y upwhen not in use :the outerl end of the block is provided with afreducedextension` 25 which is apertured as at 26.

In operation, the bowed portion of the block is used as a rest andtheangle at which said bowed portion is. positioned to the ob-` jectoperated upon determines the depth to which the ,rasp' teeth cut. Itwill be seen that by this construction and arrangement that a steadyoperation is procured. By the provision of the iine and coarse toothrasp members it will be seen that the roughing and nishing may be donewith only one mounted in said recesses, and means for rotool and withoutcutting olf the power. 4 tilting said resp members. 1U

What is claimed is: In testimony whereof, l aliix my signa- In a deviceof the class described, a head ture, in the presence of two witnesses. 5portion oval in cross section, the opposed p GEORGE HAGEN.

side faces thereof provided with conczwed "eWitnesses: recessesterminating short of the ends therev H. E. WEISS, of, cylindrical raspmembers rotatably LABS A. HOLTAN.

Copies of this patent mat be. obtained for five cents each, Toyaddressing the Commissioner of Patents,

Washington, '.D. G.

